Alan_G_03_TT

Hi Andy, and welcome.
I've had Revo before on my previous 1.8T Jetta and am thinking of trying APR on my TT because of a closer dealer. My question, when changing programs between stock or chipped with the cruise control switch, do you do this before starting the car with it on accessory key position, or how and when can that switching between programs take place?
Also, is it a must to also upgrade the tubo inlet hose on the TT, I hear it possibly collapses at higher chipped boost levels, is this true?

K04-S4

Understood and not what I wanted to do.

What are the differences between the Stage1 91 Performance code and the Stage 2+ 91 performance code?

It was rumored one difference was rear O2 sensor monitoring, anything else different?

Are the maps different? Some rumor yes and some rumor no.

Does APR make this info available and if so, where would I find it?

Many Thanks!